Four problems of evacuated blind rivets, teach you how to identify

Update:28-04-2022
Summary:

1. The reasons for the cracking of the rivet body of th […]

1. The reasons for the cracking of the rivet body of the evacuated core blind rivet are: because the hardness of the rivet body is too high or not heat treated after annealing; the diameter standard of the mandrel cap is too large; it may also be due to the high content of harmful impurities in the material of the rivet body, or there are mezzanine.
2. The lack of jumping head or bulging of the core blind rivet: due to the low tension control during the manufacture of the mandrel; and the high hardness of the rivet body; the mandrel has hydrogen embrittlement during the electroplating process.
3. The reasons for the pull-through phenomenon of evacuated core-pulling rivets are: the mandrel pulling force is too large; the diameter of the mandrel cap is too small; the rivet body material is too soft; the surface of the rivet inner hole is too lubricated.
4. The reasons for the burrs of the evacuated core-pulling rivets are: the diameter of the mandrel cap is too small; the material of the rivet body is too soft; the diameter of the workpiece drilling is too large; the standard of the nozzle of the rivet gun is too large; the distance between the mandrel fracture and the mandrel head Too large, exceeding the actual riveting thickness.

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